Drier.



L. R. JACKSON DRIER. APPLICATIDN FILED MAR. 3011916- 1 l u 1 1 n Mn 0% mm a 1 inventor Witnesses Attorneys INC mmms puns m. PNurv-Lnmz.wAsmmzm/m l1 c4 TED STATES PATENT OFFICE.

LEWIS RHODES JACKSON, OF MACON, GEORGIA, ASSIGNOR TO J. S. SCI-IOFIELDSSONS COMPANY, OF MACON, GEORGIA.

Application filed March so, 1916. Serial No. 87,770.

To all whom it may concern:

Be it known that I, Lnwrs RHoDns J ACK- soN, a citizen of the UnitedStates, residing at Macon, in the county of Bibb and State of Georgia,have invented a new and useful Drier, of which the following is aspecification. l

The present invention appertains to r0- tary driers or drying cylinders,and aims to 'provide novel and improved, yet simple and protecting theshell pieces, and rebuild the worn out parts.

Sometimes an entirely new shell must replace the worn out one. Thisinvolves expensive repair work, aside from the consideration thatconsiderable time is necessary for repairs, so that the drier plant mustbe shut down. The wearing away of the shell is even more pronounced withcertain materials of an abrasive nature and having considerablemoisture.

Holes soon wear through the steel shell of the cylinder, re-

quiring lengthy shut downs of the drier plant for renewing the shell orrepairing the same. Sometnnes, in repairing a worn out shell, sheetliner strips are placed within the shell between the flights, and areriveted, bolted or otherwise fastened to the shell. It is usuallynecessary to renew the flights or spirals at the same time, hencerepairing the shell requires the'riveting or bolting of both linerstrips and flights. The worn out parts are carried out and-the new partsbrought in through the end of the shell, which is an inconvenientmethod, due to the construction of the drier. The foregoing and otherobjections involve-considerable time, trouble and expense, and areovercome by the present invention.

It is the object of the present invention to provide a lining for theshell composed of liner plates which can be readily removed and replacedwhen worn, in connection with the sectional flights, the liner platesprotecting the shell from wear incident to the abrasion of the material,and the fumes, so that Specification of Letters Patent.

Patented Mar. 20,1917.

the shell will last for a period of time.-

The invention also includes simple and effective means for attaching theflight sections and liner plates within the shell, and simple means forindicatingwhen any of the liner plates are worn through, in order thatthey can be replaced quickly.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination and.arrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit oftheinvention.

The invention is illustrated in the accompanying drawings, whereinFigure 1 is a longitudinal section of the drier cylinder andaccompanying parts, the interior of the cylinder being left plain forsake of clearness.

Fig. 2 is an enlarged sectional detail on a transverse line of thecylinder.

Fig. 3 is a diagrammatical view of the considerably long interior of thecylinder, showing the cylinder divided longitudinally and laid out flat,portionsbeing broken away.

Fig. 1 illustrates the construction of the shell 1 of the driercylinder, but since the construction of the shell and means for mountingthe same are old and well known, they need not be described in detail,no claim being made to the construction of the shell itself or the meansfor mounting the shell for rotary movement; The material is run into oneend of the shell, and as the shell is rotated, the flights 2 thereincause the material to be worked to and out of the other end of theshell, the shell being heated internally, for drying the materialpassing through the shell. The flights in agitating the material, andthe material rubbing against the shell, ordinarily causes considerableabrasion, whereby the shell is worn olilitliquickly, assisted by thefumes within the s e The flights 2 extend spirally within the shell, andare provided with flanges 3 attached by bolts 4 or other securingelements to the shell. These flights are composed of short sectionsdisposed end to end, and the bolts are arranged in spiral series. Spiralseries of liner plates 5 of suitable metal fit against the interior ofthe shell and provide a lining therefor, and said liner plates are ofparallelogram or rhomboidal contour, and are curved to fit the innercylindrical surface of the shell. The liner plates are disposed end toend with their ends abutting, and with their edges contacting with oradjacent the bolts 4., said bolts being disposed between the edges ofthe liner plates to hold said plates in place. The flanges 3 of theflights 2 overlap the edges of the liner plates, and when the bolts aretightened, the flights are not only secured rigidly to the shell, butthe edges of the liner plates are clamped between the flights and shell,to hold the liner plates in place. Although the flights are illustratedas being of spiral form, they can be disposed longitudinally, in whichevent the shapes of the liner plates will be changed accordingly. Thesections of the flights are coextensive with the liner plates, and theends of the flight sections and liner plates are flush. The flightsclose the seams between the liner plates, and if found necessary, theseseams can be provided with any suitable packing, to prevent the fumesfrom passing through the seams to attack the shell. The same bolts areused for holding both the flight sections and liner plates in place, andthe flight flanges 3 in overlapping the edges of the liner plates,conceal the seams therebetween.

By using this lining, the shell 1 can be provided with suitable openings6 exposing the various liner plates. This is of importance, sincewhenever a liner plate wears out, the material will drop through therespective hole or holes, giving a very effective signal to the operatorthat new liner plates are needed. Some of these holes are sufficientlylarge to enable the liner plates and flight sections to be passedtherethrough, when making repairs, to avoid the necessity of removingand introducing the parts through the end of the shell.

The liner pl tes protect the shell from V wear, as well as preventingthe fumes from attacking the shell. The material in 'drop ping throughthe worn 'out plates and holes 6 will notify the operator of thenecessity for the renewal of the liner plates, and the,

drier plant is then shut down and allowed to cool. The flights areunbolted and removed, and the liner plates also removed, uncovering thelarge holes 6, through which all worn out parts can be passed quickly,and new liner plates and flights brought in. The

new liners and flights are then placed properly, and the bolts insertedand tightened, for clamping the parts in place. The shell is of skeletonform, and its lining is of sec- Oopies of this patent may be obtainedfor tional construction. Indeed, the outside shell can be cut away withthe exception of strip-like portions to close the joints between theliner plates.

The hot gases from a suitable furnace pass through the shell, in thesame direction or in a direction opposite to the direction in which thematerial passes through the shell, and the flights serve to shower thematerial through these gases, bringing the material into intimatecontact with the gases, whereby to thoroughly dry the material by thetime it reaches the discharge end of the cylinder.

Having thus described the invention, what is claimed as new is:

1. A drier cylinder embodying a shell, and a lining for the shellcomprising removable sections, the shell having openings covered by andexposing said sections and permitting material to drop therethrough fromthe shell when the lining sections wear out.

2. A drier cylinder embodying a shell, and a lining for the shellcomprising removable sections, the shell having openings exposing saidsections, and some of said openings being suficiently large for thepassage of said sections therethrough.

3. A drier cylinder embodying a shell, flights therein composed ofsections, a lining for the shell comprising liner plates, means forsecuring the flights and liner plates to the shell, the shell havingopenings exposing the liner plates through which the material can dropwhen said plates are worn out, some of said openings being sufficientlylarge for the passage of the liner plates and flight sectionstherethrough.

4. A drier cylinder embodying a shell, liner plates lining the insidethereof, flights overlapping the edges of said plates, and means fordetachably connecting the flights to the shell, the flights beingcomposed of sections coextensive in length with the liner plates.

5. A drier cylinder embodying a shell, series of liner plates lining theinside thereof and disposed end to end, flights overlapping the edges ofsaid plates, and series of bolts connecting the flights and shell anddisposed between the edges of the liner plates, the flights beingcomposed of sections coextensive in length with the liner plates.

In testimony that I claim the foregoing as my own, I have hereto alfixedmy signature in the presence of two witnesses.

LEWIS RHODES JACKSON.

Witnesses:

A. D. SOHOFIELD, Jr., WM. 1?. FLEMING, Jr.

five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

my e

